Thanks for the reply!  I ended up just sticking with `apt-get install 
emscripten`, but I'm going to revisit the vagrant install again later this 
week.  I'll try the -j1 option, or just install on my main laptop (or maybe 
an old box).  I was hoping to get a version that was self contained in a 
vm, so it's easier to reproduce my builds.

I almost abandoned this again, b/c the emscripten lib I compiled is still 
running too slow to be useable (the way I wanted).  That could be due to 
the way I'm compiling it though.  The lib is a command-line app, and deals 
with large audio files.  When I pass small files, performance is okay, but 
it really slows down when I start passing larger files.  I'm hoping it's 
due to the way I'm compiling, and that there are configure options I can 
pass to make the .js code more performant.

Thanks again for the response.


On Monday, December 14, 2015 at 11:59:14 AM UTC-5, jj wrote:
>
> Try clearing the install, and redoing it again, this time capturing the 
> log output to check for errors. I believe it had run out of memory again, 
> given that the executables don't exist.
>
> Note that emsdk has a number of cores configure option ("-j1") that you 
> can pass to the build to make it only use a single core, which will reduce 
> memory pressure.
>
>
>

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